I've tested Champions for some times now and i can say i love it!
I read all the posts on lamania and was worried. I didnt meet any impossible bosses, but I got killed a few times. Good balance to me =)
Today I noticed there was less Champions and i thought the ratio was better that way (or it was pure luck).
While running the Catacombs Pack, i noticed also that the Champions spawn already damaged.
I wasnt sure if it was my hireling attacking before i can select them or not. But after all those quests, I'm pretty positive they spawn damaged. (Maybe their champion extra-life isnt healed because they are undeads??)<-supposition
I didnt test that on living creatures.
For me, Champion System is a success! Good job~